According to Daily Mail, the discovery comes from data from the Comprehensive Nuclear Test ban treaty (CTBTO) - which monitors international nuclear bomb testing.
The CTBTO has used underwater microphones to track nuclear bomb testing since 2002. They have recently recorded strong sound signals in recordings, hearing different frequencies, rhythms, and structures.
It was only after the researchers analyzed the data that they realized that they had accidentally encountered a new crab cluster in the area.
After comparing the newly collected sounds with sounds from three other groups of blue whale identified in the Indian Ocean, the researchers said that this was a new group and named the Chagos green-throated whale population.
If it can be confirmed directly by the eyes, the new green whale population will be the fifth population discovered in the Indian Ocean.
Green whale can be more than 30m long and weigh nearly 200 tons, but green sunflowers are smaller, they are about 24m long and weigh nearly 90 tons.
We dont know how many whale are in this group, but we think there are many because of the large number of sounds we hear, said Tracey Rogers, a professor at the University of New South Wales, Australia, a marine ecologist.
"Green elephants in the Southern Hemisphere are very difficult to study because they live offshore and do not jump onto the water like humpback elephants. If it weren't for these recordings, we wouldn't have known that there was a cluster of blue whale in the middle of the equator in the Indian Ocean," said Professor Rogers.
Its great that a nuclear bomb test control system that would allow us to find new whale populations that could help us study the health of the marine environment in the long run, said Professor Rogers.
